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Showing 1 to 11 of 11 for “"Asteroidea"”.
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Contribuição ao estudo do gênero Echinaster Muller & Troschel, 1840 (Echinodermata: Asteroidea) no litoral brasileiro
383 specimens of Echinaster are studied from 12 localities along Brazilian coast south of the state of Ceará. Besides description of characters, four numerical variables are compared graphically for each locality. The following result was obtained: it was only found E. echinophorus (Lamarck), in …
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Variação temporal em estrelas-do-mar Asterina stellifera (Echinodermata: Asteroidea) na Baía de Guanabara, Rio de Janeiro
Guanabara Bay, located in the State of Rio de Janeiro, is an area of multiple uses (e.g. ecology, tourism, fishing). The Bay has been through a process of environmental degradation, due to populational and industrial growth on its neighbourhoods. Morphometrical and numerical data on the seastar …
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Ciclo reprodutivo de Echinaster (Othilia) brasiliensis Müller & Troschel, 1842 (Echinodermata: Asteroidea) na região do Cabo Frio, RJ
ln the present study specimens of Echinaster (Othilia) brasiliensis were collected monthly at João Fernandes Beach, Búzios, Brazil, from August 1999 to December 2000. Reproductive cycle was studied using gonad index and histological analysis of gonads. E. (O.) brasiliensis exhibited a continuous …
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Distribuição, abundância e hábito alimentar de Asteroidea (Echinodermata) de fundos inconsolidados da Plataforma Continental do Cabo Frio, RJ
This study is part of the Cabo Frio Upwelling Ecosystem Integrated Project and aims to verify the specific composition, distribution and diets of asteroids of the Cabo Frio continental shelf, RJ. Asteroide were collected monthly from January 1986 to December 1988 by a 10 m otter-trawl. Twenty …
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Ciclo reprodutivo, gametogênese e desenvolvimento larval de Asterina stellifera (Möbius, 1859) (Echinodermata: Asteroidea) na região de Cabo Frio, RJ
The development and reproductive cycle of Asterina stellifera were studied from amples taken from populations in two distinct habitats from Cabo Frio. One is an intertidal seagrass flat at Japonês lsland ( 1994-1995); the second is a sublittoral rocky-shore at Pontal Beaches ( 1999-2000). …
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Biologia reprodutiva e estrutura de duas populações de Coscinasterias tenuispina (Lamarck, 1816) (Echinodermata: Asteroidea) na região do Cabo Frio, Rio de Janeiro
Sexual and asexual reproduction of the fissiparous asteroid Coscinasterias tenuispina were studied in two populations at Cabo Frio region, Rio de Janeiro, from August 1999 to December 2000. One population occurs on subtidal region at Prainha, Arraial do Cabo, and the other occurs on intertidal …
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The influence of sampling method on detecting benthic biodiversity patterns at the ecoregion scale on the South African west coast
… The epifaunal community was dominated by Asteroidea, Decapoda and Gastropoda, whereas Polychaeta, Amphipoda and Bivalvia dominated infaunal communities. BTA found trawl samples to be dominated by epifauna exhibiting large sizes, dorso-ventrally flattened body forms, free-living and …
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Respuesta de las asociaciones de fauna megabéntica a diferentes tipos de hábitats en cuencas del Golfo de California
… dominados por equinodermos (Pannychia moseleyi, Asteroidea) y crustáceos decápodos (Munidopsis). El patrón de la megafauna en el área de sediento en la cuenca Delfín es distinto, dominado por peces bentopelágicos (Macrouridae) y pulpos. El tipo de sustrato está correlacionado con la variación en …
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Post-larval development in deep-sea echinoderms
… belonging to three classes (Ophiuroidea, Asteroidea and Echinoidea), is described using scanning electron microscopy. The life history of Ophiocten gracilis is also examined as a case study for future research on post-larval organisms. The analysis of development in ophiuroids reveals that …
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Towards informing a data-driven approach to marine bioregionalization in South Africa: a case study using benthic epifaunal datasets from the southern Benguela shelf
… hermit crab Sympagurus dimorphous) and burrowing Asteroidea better than the towed camera. Though broad similarities in assemblage structure were evident between sampling methods, with high correlations found between important Co-CA axes (r = 0.93, 0.93, 0.79, 0.80), patterns were not significantly …